agglomeration modelling
 

Hi,

has anyone seen CFD work on particle agglomeration, in particular fat globules?

Thanks for any hints/pointers in advance!

Lasse

Re: agglomeration modelling
 

Hi,

I see nobody could help you, so I decided to try to give you a few hints on that in ... Astrophysics.

There are a few works done on agglomeration processes, mainly of dust particles to form chondrules and other larger particles. This is not similar to fat globules, but it is the same principles: sticking together.

You might want to try these papers and the references therein:

Weidenschilling, 1980,ICARUS volume 44, page 172 ("Dust to planetesimals; settling and coagulation in the solar nebula").

Chokshi, Tielens and Hollenbach, 1993, The Astrophysical Journal, volu. 407, p.806 ("dust coagulation").

Mizuno, Markiewicz and Volk, 1988, Astronomy and Astrophysics, Vol. 195, p. 183 ("Grain growth in turbulent protoplanetary accretion disks").

These are usually semi-analytical modeling that can be included somehow in the CFD modeling.

These journals can be found in the library of Astronomy and Astrophysics, Physics at any University.

In addition to coagulation, there are many more interesting processes going on due to the drag and transport of these particles (molecules) in the flow. And this can be more complex if the flow is turbulent and/or has vorticity.

Are you modeling the accumulation of fat/cholesterol in the blood vessels? Or are you in the Industry (oil company)?

I hope this helps,

Patrick Godon

Hi Patrick,

I have a question regarding solid particle accumulation/agglomeration on a surface in turbulent flow.

I m wondering if in FLUENT, I can simulate the particle accumulation since in FLUENT when one particle sticks to the wall for the second particle FLUENT doesnt consider the new geometry or the new surface (with previous trapped particles) and it assumes the surface is always the same surface. FLUENT only gives us the number of the particles hit the surface whereas apparently OpenFoam deals with this subject better.
Any idea or comments you might have will be a great help,

Thanks,
Amir

@ Amir: Did you find any help on solid particle accumulation/agglomeration ?? If so could you please explain how you did it?